
<!-- 学习链接 https://www.ruanyifeng.com/blog/2019/03/grid-layout-tutorial.html -->

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Grid</title>
  <style>
    * {
      padding: 0;
      margin: 0;
    }
    html, body {
      width: 100%;
      height: 100%;
    }
    span {
      font-size: 2em;
    }

    #container{
      height: 100%;
      /* justify-content: center;
      align-content: center; */
      place-content: center;

      display: grid;
      grid-template-columns: 100px 100px 200px;
      grid-template-rows: 100px 100px 100px;

      gap: 20px;

      grid-template-areas: 'a b c'
                           'd e f'
                           'g h i';

      grid-auto-flow: column;

      /* align-items: center;
      justify-items: center; */
      place-items: center;
    }

    .item {
      font-size: 2em;
      border: 1px solid #e5e4e9;
      width: 100%;
      height: 100%;
      /* line-height: 100px;
      text-align: center; */
    }

    .item-1 {
      background-color: #ef342a;
      /* grid-column: 1 / 4;
      grid-area: e; */
      align-self: center;
      justify-self: center;
    }

    .item-2 {
      background-color: #f68f26;
    }

    .item-3 {
      background-color: #4ba946;
    }

    .item-4 {
      background-color: #0376c2;
    }

    .item-5 {
      background-color: #c077af;
    }

    .item-6 {
      background-color: #f8d29d;
    }

    .item-7 {
      background-color: #b5a87f;
    }

    .item-8 {
      background-color: #d0e4a9;
    }

    .item-9 {
      background-color: #4dc7ec;
    }
  </style>
</head>
<body>
  <div id="container">
    <div class="item item-1">1</div>
    <div class="item item-2">2</div>
    <div class="item item-3">3</div>
    <div class="item item-4">4</div>
    <div class="item item-5">5</div>
    <div class="item item-6">6</div>
    <div class="item item-7">7</div>
    <div class="item item-8">8</div>
    <div class="item item-9">9</div>
  </div>
</body>
</html>